A small boulder opals with beautiful pink, blue and green stripes. 3.31 carats. 12 x 8.1mm 3.2 mm thick Natural solid boulder opal. Mined by Sue at her Mt. Margaret...
A lovely small pastel stripe free-form boulder opal. 4.70 carats. 15.8 x 10.3 mm. 4.1 mm thick. Natural solid boulder opal. Mined by Sue at her Mt. Margaret opal mine...
A free-form boulder opal with rainbow colours and a semi-dark body tone / background. 8.68 carats. 17.8 x 12.9 mm / 0.70" x 0.50". 4.7 mm / 0.18" thick. Natural...
A beautiful triangle boulder opal with a green and pink colour combination. 11.81 carats. 19.9 x 18.1 mm / 0.78" x 0.71". 4.2 mm / 0.16" thick. Natural solid boulder...
